GE Industrial Solutions AF-600 FP Metasys User Manual
Page 7

2.1.3 Hardware Set-up
RS485 Network Connection:
One or more frequency converters can be connected to a control (or master) using the RS485 standardized interface. Terminal 68 is connected to the P signal (TX
+, RX+), while terminal 69 is connected to the N signal (TX-,RX-). If more than one frequency converter is connected to a master, use parallel connections.
Illustration 2.1: Network termination switch
In order to avoid potential equalizing currents in the screen, earth the cable screen via terminal 61, which is connected to the frame via an RC-link.
Network termination: The RS485 network must be terminated by a resistor network at both ends. For this purpose, set switch S801 on the control card to "ON".
For more information, see the paragraph: Switches S201, S202 and S801.
NB!
Communication protocol must be set to Drive MC par. O-30.
AF-600 FP Metasys
6
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